Insulating cover and retaining pin for high voltage electrical transmission structures
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United States of America Patent
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Feb 24, 2015
Grant Date -
Oct 10, 2013
app pub date -
Apr 5, 2012
filing date -
Apr 5, 2012
priority date (Note) -
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Abstract
A plastic retaining pin for being inserted through a retaining hole in a high voltage insulating cover has an oval cross-section. The pin has a compressible nose, with the wide part of the nose being larger than the retaining hole. The nose has a relatively long front portion that expands out from the tip at about a 15 degree angle for easy insertion through the retaining hole. A back part of the nose is relatively short and has a relatively steep angle of about 45 degrees so as to require a higher pulling force to compress the nose when removing the pin from the hole. The other end of the pin has a grasping hole for receiving the hook of a hot stick. If the retaining hole is oval, the grasping hole is at a predetermined orientation with respect to the insulating structure to ease removal using a hot stick.
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